type RoleHistory = {
    user: string;
    assistant: string;
};
declare class MemoryHistory {
    memory: (inside: RoleHistory, _state: any) => Promise<void>;
    getMemory: (_state: any, k?: number) => Promise<any[]>;
    clearMemory: (_state: any) => Promise<void>;
}
declare const _default: MemoryHistory;
export default _default;
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